body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem;
}

header h1 {
    margin: 0;
}

.container {
    display: flex;
    flex: 1;
}

nav {
    width: 250px;
    background-color: #f4f4f4;
    padding: 20px;
    min-height: calc(100vh - 140px);
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

nav ul li {
    display: block;
    margin-bottom: 10px;
}

nav ul li a {
    color: #333;
    text-decoration: none;
    display: block;
    padding: 8px;
    border-radius: 4px;
}

nav ul li a:hover {
    background-color: #ddd;
}

main {
    flex: 1;
    padding: 20px;
    background-color: #fff;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
    position: static;
    bottom: 0;
    width: 100%;
}
